3.2.0 Dev version

The "develop" branch of our github repository is "the next version" of CodeIgniter 3.
The [unreleased changelog](https://github.com/bcit-ci/CodeIgniter/b...ngelog.rst) contains what we expect *might* make it into the next version of CI3, which *might* be 3.2.0, but which also *might* be 3.1.8 without the 3.2.0-specific changes, depending on the timing of the as-yet-unplanned next release.

Basically, any contributions merged into the codebase are candidates for the next release, which *could* be thought of as 3.2.0-dev although that isn't the whole picture

Line 58 of the [CI bootstrap](https://github.com/bcit-ci/CodeIgniter/b...gniter.php) identifies the in-progress version as 3.2.0-dev, which is probably where your notion originated.